Kevin is your student. His parents are farmers and Kevin's parents have a farm where he will most likely work when he leaves school.
Example 1: When Kevin is at home he is part of a family communicative environment where everyone talks to everyone else frequently. This would involve his brother and sister, his grandmother and two cousins whom he sees nearly everyday because they live close by. When talking with his family, Kevin would hear and learn to use words relating to farming. He would listen to discussions about the prices of stock, fertilizer, and when it is going to rain. He would hear negotiations about who will bring in the cattle next week, he would hear discussions about a quote for some new fencing and the possibility of needing a vet when the heifers start calving. Some members of Kevin's family might articulate a particular point of view with regard to farming, for example, wanting to put in practice more modern and scientific practices So he might hear arguments in favour of adding iron and lime to particular pastures based on information from the local Department of Agriculture representative. There might also be family discussion about who is going into town and that would mean arranging the day and time. In this case Kevin would hear the casual speech that one uses with one's family. Kevin would also hear and understand a lot of farming terminology especially relating to more modern farming practices.
During the weekends and holidays Kevin would most likely help on the farm. This might involve communicating with neighbouring farmers, stock agents, his brother and father and various contractors. The younger neighbours may have known each other for many years but Kevin may not have met the contractors before. In this communicative environment talk would be about the state of crops and the current prices for cattle, etc. Speech would be casual and using a lot of farming terminology.
Example 2: Kevin would also probably play football on the weekends. There might be practice on Thursday nights. He would spend time with the team on Thursdays and Saturdays. Kevin would know everyone in the team well. His brother might also be on the team and various neighbours. A lot of the talking within this group would be about football. They might recall particular instances of play on the field, they might discuss their injuries and whether they should play, they might negotiate who will be in the team each week and who will play in which position. Kevin might speak quite differently in this communicative environment. He might want to sound like 'one of the boys' and to do that he would use the same repertoire of words and expressions as the others do.
When Kevin is older he may take on more responsibility with the football team. At the beginning of each season they might have a working bee to tidy up the clubrooms. Kevin might need to telephone other team members to inform them of the time and date and might have to organise a keg and a barbecue for the end of the day. Again, Kevin's speech would be casual rather than formal. In this case he would use a repertoire which would show he was a member of the football team and community spirited.
The communicative environment of the football team would require particular types of speech. What sort of particular communication will Kevin take part in?